Do you know each click on the internet and search history is being record. That better services can be offered
like online shopping and what is your preference, dislikes, likes and more is being store on the major search engine.
This is how they can track you and also provide you with what you like. Have you ever bought something on amazon only to have it
appear on facebook ads, This is a simple example of your search history being recorded and stored.
Take back your Privacy with and browser with build in encryption an proxy.